The isonicotinic acid - pyrazolone light intensity method is currently applied to measure the prussiates in the water.
水中氰化物的测定,目前采用异烟酸———吡唑啉酮光度法。
The two now isonicotnic acid hydrazone and N-oxide isonicotinic acid hydrazone of ethyl furoyl acetates were synthesised. The condensations were carried out in ethyl alochol medium.